Population fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize

Vista sencilla de ítem
dc.creatorSônia Thereza Bastos Dequech
dc.creatorCátia Camera
dc.creatorVinícius Soares Sturza
dc.creatorLeandro do Prado Ribeiro
dc.creatorRanyse Barbosa Querino
dc.creatorSônia Poncio
dc.date2013
dc.date.accessioned2026-07-07T03:51:48Z
dc.descriptionThis study aimed to evaluate the fluctuation of S. frugiperda eggs and natural parasitism by Trichogramma and identify and quantify parasitoid species in maize fields in the state of Rio Grande do Sul, Brazil. Surveys were carried out in two growing seasons: in 2006/2007 we assessed one growing season (late sowing) in Santa Maria, and in 2007/2008 we assessed two growing seasons (early and late sowing) in Santa Bárbara do Sul. Daily air temperature and rainfall were recorded at both locations. In each evaluation, entire plants were examined for the presence or absence of S. frugiperda egg masses, which were analyzed for larvae hatching or parasitoid emergence. The number of S. frugiperda eggs is higher between 8 and 30 days after plant emergence, decreasing in the later stages of maize growth; the occurrence of parasitoids begins about two days after pest egg occurrence; S. frugiperda egg parasitism is low; and eggs are parasitized by Trichogramma pretiosum and Trichogramma atopovirilia, with marked predominance of the first and possible occurrence of both parasitoid species in the same egg mass.
dc.formatapplication/pdf
dc.identifier1679-9275
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303028704004
dc.identifier.urihttp://hdl.handle.net/123456789/445230
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3030
dc.rightsActa Scientiarum. Agronomy
dc.sourceActa Scientiarum. Agronomy (Brasil) Num.3 Vol.35
dc.subjectAgrociencias
dc.titlePopulation fluctuation of Spodoptera frugiperda eggs and natural parasitism by Trichogramma in maize
dc.typeartículo científico

Archivos

Colecciones

Acta Scientiarum. Agronomy - Universidade Estadual de Maringá